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Worksheets

Machines

Total questions: 207

Worksheet time: 2hrs 49mins

Name
Class
Date
1.

Majority of the machines in the human body are...

a)

Levers

b)

Wedges

c)

Wheels and Axles

d)

Inclined Planes

2.

Connective tissues of bones

a)

Tendons

b)

Muscles

c)

Cartilage

d)

Joint

3.

Tendons and Muscles are...

a)

Levers

b)

Wedges

c)

Wheels and Axles

d)

Inclined Planes

4.

What acts as the fulcrum in the levers in the human body?

a)

Tendons

b)

Muscles

c)

Cartilage

d)

Joint

5.

What acts as the fulcrum in the levers in the human body?

a)

Tendons

b)

Muscles

c)

Cartilage

d)

Joint

6.

The joint at the top of your neck is...

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

4th class lever

7.

The arm is a...

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

4th class lever

8.

The ball of your foot is...

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

4th class lever

9.

Some of your teeth are...

a)

Levers

b)

Wedges

c)

Wheels and Axles

d)

Inclined Planes

10.

Wedges in the human body include..

a)

All your teeth

b)

Just the incisors

c)

Just the molars

11.
A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.  
a)
wedge
b)
screw
c)
lever
d)
inclined plane 
12.
An inclined plane wrapped around a rod forms this simple machine 
a)
lever
b)
pulley
c)
screw
d)
wedge 
13.
A simple machine that consists a rigid bar that pivot about a fixed point
a)
lever
b)
pulley
c)
wheel and axle
d)
fulcrum 
14.
An axe is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge 
15.
A seesaw is an example of a  
a)
wedge
b)
lever 
c)
inclined plane 
d)
pulley 
16.
A device that has two or more simple machines working together 
a)
fulcrum 
b)
pulley
c)
compound (complex) machine 
d)
motor 
17.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
18.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
19.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
20.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
21.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
22.
What type of simple machine is this?
a)
wheel and axle
b)
gear
c)
lever
d)
inclined plane
23.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
24.
The transfer of energy that occurs when a force makes an object move is known as 
a)
effort
b)
potential 
c)
kinetic 
d)
work 
25.
What do you call a machine made up of two or more simple machines?
a)
complicated machine
b)
compound or complex machine
c)
comprehensive machine
d)
constructive machine
26.
The device used to raise a flag up a flag pole is an example of a 
a)
wheel and axle 
b)
lever
c)
inclined plane 
d)
pulley 
27.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
change the direction of the applied force
d)
all of the above
28.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
29.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
30.
Identify this simple machine
a)
Lever
b)
Wheel & Axle
c)
Inclined Plane
d)
Screw
31.

What term best describes using a simple machine to increase in force or speed?

a)

power

b)

mechanical advantage

c)

work

d)

technician techniques

32.

Any of several elementary mechanisms that are used to transmit or modify force or motion.

a)

compound machine

b)

engine

c)

simple machine

d)

complex machine

33.

What is the definition of a wedge?

a)

A cylinder with a spiral ridge or thread running round the outside.

b)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

c)

Something that taper to a thin edge and is used for separating or blocking things.

d)

The point around which a lever turns or is supported.

34.

What is the definition of a screw?

a)

A cylinder with a spiral ridge or thread running round the outside.

b)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

c)

Something that taper to a thin edge and is used for separating or blocking things.

d)

The point around which a lever turns or is supported.

35.

What is the definition of a fulcrum?

a)

A cylinder with a spiral ridge or thread running round the outside.

b)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

c)

Something that taper to a thin edge and is used for separating or blocking things.

d)

The point around which a lever turns or is supported.

36.

What is the definition of a wheel and axle?

a)

A cylinder with a spiral ridge or thread running round the outside.

b)

A mechanical device consisting of a levr that rotates 360 degrees on a fulcrum.

c)

Something that taper to a thin edge and is used for separating or blocking things.

d)

The point around which a lever turns or is supported.

37.

A machine that consists of two or more simple machines as a(n)

a)

engine

b)

compound machine

c)

mechanical advantage

d)

simple machine

38.

What is the definition of an inclined plane?

a)

A flat surface set at an angle used to help raise or lower objects.

b)

The point around which a lever turns or is supported.

c)

A rigid bar resting on a pivot point or fulcrum, used to move a load with one end when pressure is applied to the other.

d)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

39.

What is the definition of an pulley?

a)

A flat surface set at an angle used to help raise or lower objects.

b)

The point around which a lever turns or is supported.

c)

A rigid bar resting on a pivot point or fulcrum, used to move a load with one end when pressure is applied to the other.

d)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

40.

What is the definition of an lever?

a)

A flat surface set at an angle used to help raise or lower objects.

b)

The point around which a lever turns or is supported.

c)

A rigid bar resting on a pivot point or fulcrum, used to move a load with one end when pressure is applied to the other.

d)

A solid disc that rotates around a center axis. It usually has a groove around the outside edge that allows ropes or belts to easily ride around it.

41.

In order to gain mechanical advantage using a lever you need to do which of the following?

a)

Move the fulcrum further away from the load

b)

lift harder

c)

shorten the lever

d)

move the fulcrum closer to the load

42.

There are two ways to gain mechanical advantage using a wheel and axle, which one is true?

a)

go faster

b)

change the size of the axle

c)

use smaller wheels

43.

In order to gain mechanical advantage using an incline plane you need to do which of the following?

a)

Get a running start and push real, real hard

b)

Increase the distance over which something will be moved

c)

Sand down the incline plane

d)

Shorten the distance over which something will be moved

44.

In order to gain mechanical advantage using an pulley you need to do which of the following?

a)

pull as hard as you can

b)

lighten the load that is needed to be moved

c)

add more pulleys

d)

take away one or more pulleys

45.

Energy in motion is called?

a)

chemical

b)

kinetic

c)

heat

d)

potential

46.

Energy at rest is called?

a)

chemical

b)

kinetic

c)

heat

d)

potential

47.

A group of items that work together for a common goal is called?

a)

rationale

b)

convention

c)

conversion

d)

system

48.

An example of a subsystem of your house or apartment would be...

a)

heating system

b)

water system

c)

electrical system

d)

all of the above

49.

What type of lever is this?

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

50.

What type of lever is this?

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

51.

What type of lever is this?

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

52.

What is the machine called that has an efficiency of 100 percent?

a)

Ideal Machine

b)

Simple Machine

c)

Compound Machine

d)

Pulley

53.

What is a machine called that combines two or more simple machines?

a)

Ideal Machine

b)

Pulley

c)

Wheel and axle

d)

Compound Machine

54.

What is the term that means you are comparing output work to input work?

a)

Force

b)

Input Force

c)

Efficiency

d)

Output Force

55.

The number of times a machine increases a force exerted on it?

a)

Work

b)

Mechanical Advantage

c)

Power

d)

Watt

56.

What is the combination of all the forces on an object called?

a)

Work

b)

Joule

c)

Net Force

d)

Input Force

57.

What is Force measured in on the SI scale?

a)

Joule

b)

Meter

c)

Watt

d)

Newton

58.

Which of the following is the correct formula for work?

a)

Work=Force x Distance

b)

Work= Distance x Watt

c)

Work= Force x Time

d)

Work= Force x Watt

59.

What is the rate at which work is done?

a)

Joule

b)

Watt

c)

Force

d)

Power

60.

What is the force you exert called?

a)

Output force

b)

Input force

61.

What is the force a machine exerts?

a)

Input Force

b)

Output Force

62.

What is a device that allows you to do work in an easier way?

a)

Ideal Machine

b)

Compound Machine

c)

Simple Machine

d)

All of the above

63.

Which of the following is a unit

a)

Work

b)

Joule

c)

Force

d)

All of the above

64.

What is the Input Energy?

a)

A

b)

B

65.

What is the output energy?

a)

B

b)

A

66.

What is the output energy?

a)

A

b)

B

67.

What is the Input Energy

a)

A

b)

B

68.

What is the input energy?

a)

A

b)

B

69.

What is the Output Energy?

a)

A

b)

B

70.

What is the output energy?

a)

A

b)

B

71.

What is the input energy?

a)

A

b)

B

72.

What is the Input Energy

a)

A

b)

B

73.

What is the output energy?

a)

A

b)

B

74.

What is the input energy

a)

A

b)

B

75.

What is the output energy

a)

B

b)

A

76.

Which of the following is not a type of lever?

a)

First class

b)

Secon Class

c)

Third Class

d)

Compound

77.

Which of the following is not a type of pulley?

a)

Fixed

b)

Movable

c)

Simple

d)

Compound

78.

Which of the following is not a type of inclined plane?

a)

Ramp

b)

Door stopper

c)

Screwdriver

d)

Slide

79.

Which of the following is not an example of a wedge?

a)

Axe

b)

Screwdriver

c)

Saw

d)

Ice Pick

80.

What is not an example of a screw?

a)

Axe

b)

Jar top

c)

End of Light Bulbs

d)

Water Faucets

81.

What is not an example of a lever

a)

Hockey Stick

b)

Screwdriver

c)

Teeter Totter

d)

Crowbar

82.

What is not an example of a Pulley

a)

Screwdriver

b)

Elevator lift

c)

Well

d)

Crane

83.

Which is not an example of a Wheel and Axle?

a)

Screwdriver

b)

Door knob

c)

Teeter Totter

d)

Mixer

84.

Which of the following vocab does not go with Inclined plane

a)

Work

b)

Force

c)

Input Force

d)

Compound Machine

85.

Which of the following vocab does not go with wedge

a)

Input Force

b)

Output Force

c)

Fulcrum

d)

Work

86.

Which of the following vocab does not go with screw

a)

Simple machine

b)

Fixed

c)

Input Force

d)

Force

87.

Which vocab does not go with levers

a)

Compound

b)

Input Force

c)

Output Force

d)

Work

88.

Which vocab does not go with pulleys

a)

Fulcrum

b)

Force

c)

Fixed

d)

Movable

89.

What Vocab does not go with Wheel and axle?

a)

Force

b)

Input Force

c)

Axle

d)

Fixed

90.

What is it called when you multiply Force times Distance

a)

Work

b)

Joule

c)

Newton

d)

Power

91.

What is a machine that combines two or more machines

a)

Ideal

b)

Simple

c)

Movable

d)

Compound

92.

What is it called when you divide work by time

a)

Force

b)

Power

c)

Newton

d)

Joule

93.

What is the rate at which something is done

a)

Force

b)

Work

c)

Power

d)

Newton

94.

What is the term that means you compare the output to the input?

a)

Friction

b)

Ideal

c)

Efficiency

d)

Work

95.

What is the most basic device for making work easier

a)

Compound Machine

b)

Ideal Machine

c)

Simple Machine

d)

Inclined plane

96.

What is a device that is thick on one end and tapers on the other?

a)

Screw

b)

Wedge

c)

Lever

d)

Pulley

97.

What simple machine is an inclined plane wrapped around a cylinder?

a)

Wedge

b)

Pulley

c)

Screw

d)

Lever

98.

What simple machine is a rigid bar that is free to pivot or rotate on a fixed point?

a)

Inclined plane

b)

Wedge

c)

Lever

d)

Fulcrum

99.

What is the simple machine that is made of a grooved wheel with a rope or cable wrapped around it?

a)

Pulley

b)

Lever

c)

Wedge

d)

Screw

100.

What is the simple machine that is made of two connected objects that rotate about a common axis.

a)

Pulley

b)

Screw

c)

Wedge

d)

Wheel and axle

101.

What type of net force causes a change in an object's motion?

a)

Zero

b)

Nonzero

c)

Compound

d)

Efficient

102.

what is a push or pull called?

a)

Force

b)

Newton

c)

Work

d)

Power

103.

What is the simple machine that is a flat sloped surface

a)

Inclined Plane

b)

Screw

c)

Wheel and Axle

d)

Wedge

104.

What is the machine called that has an efficiency of 100 percent?

a)

Ideal Machine

b)

Simple Machine

c)

Compound Machine

d)

Pulley

105.

What is a machine called that combines two or more simple machines?

a)

Ideal Machine

b)

Pulley

c)

Wheel and axle

d)

Compound Machine

106.

What is the term that means you are comparing output work to input work?

a)

Force

b)

Input Force

c)

Efficiency

d)

Output Force

107.

The number of times a machine increases a force exerted on it?

a)

Work

b)

Mechanical Advantage

c)

Power

d)

Watt

108.

What is the combination of all the forces on an object called?

a)

Work

b)

Joule

c)

Net Force

d)

Input Force

109.

What is Force measured in on the SI scale?

a)

Joule

b)

Meter

c)

Watt

d)

Newton

110.

Which of the following is the correct formula for work?

a)

Work=Force x Distance

b)

Work= Distance x Watt

c)

Work= Force x Time

d)

Work= Force x Watt

111.

What is the rate at which work is done?

a)

Joule

b)

Watt

c)

Force

d)

Power

112.

What is the force you exert called?

a)

Output force

b)

Input force

113.

What is the force a machine exerts?

a)

Input Force

b)

Output Force

114.

What is a device that allows you to do work in an easier way?

a)

Ideal Machine

b)

Compound Machine

c)

Simple Machine

d)

All of the above

115.

Which of the following is a unit

a)

Work

b)

Joule

c)

Force

d)

All of the above

116.

What is the Input Energy?

a)

A

b)

B

117.

What is the output energy?

a)

B

b)

A

118.

What is the output energy?

a)

A

b)

B

119.

What is the Input Energy

a)

A

b)

B

120.

What is the input energy?

a)

A

b)

B

121.

What is the Output Energy?

a)

A

b)

B

122.

What is the output energy?

a)

A

b)

B

123.

What is the input energy?

a)

A

b)

B

124.

What is the Input Energy

a)

A

b)

B

125.

What is the output energy?

a)

A

b)

B

126.

What is the input energy

a)

A

b)

B

127.

What is the output energy

a)

B

b)

A

128.

Which of the following is not a type of lever?

a)

First class

b)

Secon Class

c)

Third Class

d)

Compound

129.

Which of the following is not a type of pulley?

a)

Fixed

b)

Movable

c)

Simple

d)

Compound

130.

Which of the following is not a type of inclined plane?

a)

Ramp

b)

Door stopper

c)

Screwdriver

d)

Slide

131.

Which of the following is not an example of a wedge?

a)

Axe

b)

Screwdriver

c)

Saw

d)

Ice Pick

132.

What is not an example of a screw?

a)

Axe

b)

Jar top

c)

End of Light Bulbs

d)

Water Faucets

133.

What is not an example of a lever

a)

Hockey Stick

b)

Screwdriver

c)

Teeter Totter

d)

Crowbar

134.

What is not an example of a Pulley

a)

Screwdriver

b)

Elevator lift

c)

Well

d)

Crane

135.

Which is not an example of a Wheel and Axle?

a)

Screwdriver

b)

Door knob

c)

Teeter Totter

d)

Mixer

136.

Which of the following vocab does not go with Inclined plane

a)

Work

b)

Force

c)

Input Force

d)

Compound Machine

137.

Which of the following vocab does not go with wedge

a)

Input Force

b)

Output Force

c)

Fulcrum

d)

Work

138.

Which of the following vocab does not go with screw

a)

Simple machine

b)

Fixed

c)

Input Force

d)

Force

139.

Which vocab does not go with levers

a)

Compound

b)

Input Force

c)

Output Force

d)

Work

140.

Which vocab does not go with pulleys

a)

Fulcrum

b)

Force

c)

Fixed

d)

Movable

141.

What Vocab does not go with Wheel and axle?

a)

Force

b)

Input Force

c)

Axle

d)

Fixed

142.

What is it called when you multiply Force times Distance

a)

Work

b)

Joule

c)

Newton

d)

Power

143.

What is a machine that combines two or more machines

a)

Ideal

b)

Simple

c)

Movable

d)

Compound

144.

What is it called when you divide work by time

a)

Force

b)

Power

c)

Newton

d)

Joule

145.

What is the rate at which something is done

a)

Force

b)

Work

c)

Power

d)

Newton

146.

What is the term that means you compare the output to the input?

a)

Friction

b)

Ideal

c)

Efficiency

d)

Work

147.

What is the most basic device for making work easier

a)

Compound Machine

b)

Ideal Machine

c)

Simple Machine

d)

Inclined plane

148.

What is a device that is thick on one end and tapers on the other?

a)

Screw

b)

Wedge

c)

Lever

d)

Pulley

149.

What simple machine is an inclined plane wrapped around a cylinder?

a)

Wedge

b)

Pulley

c)

Screw

d)

Lever

150.

What simple machine is a rigid bar that is free to pivot or rotate on a fixed point?

a)

Inclined plane

b)

Wedge

c)

Lever

d)

Fulcrum

151.

What is the simple machine that is made of a grooved wheel with a rope or cable wrapped around it?

a)

Pulley

b)

Lever

c)

Wedge

d)

Screw

152.

What is the simple machine that is made of two connected objects that rotate about a common axis.

a)

Pulley

b)

Screw

c)

Wedge

d)

Wheel and axle

153.

What type of net force causes a change in an object's motion?

a)

Zero

b)

Nonzero

c)

Compound

d)

Efficient

154.

what is a push or pull called?

a)

Force

b)

Newton

c)

Work

d)

Power

155.

What is the simple machine that is a flat sloped surface

a)

Inclined Plane

b)

Screw

c)

Wheel and Axle

d)

Wedge

156.

What is the machine called that has an efficiency of 100 percent?

a)

Ideal Machine

b)

Simple Machine

c)

Compound Machine

d)

Pulley

157.

What is a machine called that combines two or more simple machines?

a)

Ideal Machine

b)

Pulley

c)

Wheel and axle

d)

Compound Machine

158.

What is the term that means you are comparing output work to input work?

a)

Force

b)

Input Force

c)

Efficiency

d)

Output Force

159.

The number of times a machine increases a force exerted on it?

a)

Work

b)

Mechanical Advantage

c)

Power

d)

Watt

160.

What is the combination of all the forces on an object called?

a)

Work

b)

Joule

c)

Net Force

d)

Input Force

161.

What is Force measured in on the SI scale?

a)

Joule

b)

Meter

c)

Watt

d)

Newton

162.

Which of the following is the correct formula for work?

a)

Work=Force x Distance

b)

Work= Distance x Watt

c)

Work= Force x Time

d)

Work= Force x Watt

163.

What is the rate at which work is done?

a)

Joule

b)

Watt

c)

Force

d)

Power

164.

What is the force you exert called?

a)

Output force

b)

Input force

165.

What is the force a machine exerts?

a)

Input Force

b)

Output Force

166.

What is a device that allows you to do work in an easier way?

a)

Ideal Machine

b)

Compound Machine

c)

Simple Machine

d)

All of the above

167.

Which of the following is a unit

a)

Work

b)

Joule

c)

Force

d)

All of the above

168.

What is the Input Energy?

a)

A

b)

B

169.

What is the output energy?

a)

B

b)

A

170.

What is the output energy?

a)

A

b)

B

171.

What is the Input Energy

a)

A

b)

B

172.

What is the input energy?

a)

A

b)

B

173.

What is the Output Energy?

a)

A

b)

B

174.

What is the output energy?

a)

A

b)

B

175.

What is the input energy?

a)

A

b)

B

176.

What is the Input Energy

a)

A

b)

B

177.

What is the output energy?

a)

A

b)

B

178.

What is the input energy

a)

A

b)

B

179.

What is the output energy

a)

B

b)

A

180.

Which of the following is not a type of lever?

a)

First class

b)

Secon Class

c)

Third Class

d)

Compound

181.

Which of the following is not a type of pulley?

a)

Fixed

b)

Movable

c)

Simple

d)

Compound

182.

Which of the following is not a type of inclined plane?

a)

Ramp

b)

Door stopper

c)

Screwdriver

d)

Slide

183.

Which of the following is not an example of a wedge?

a)

Axe

b)

Screwdriver

c)

Saw

d)

Ice Pick

184.

What is not an example of a screw?

a)

Axe

b)

Jar top

c)

End of Light Bulbs

d)

Water Faucets

185.

What is not an example of a lever

a)

Hockey Stick

b)

Screwdriver

c)

Teeter Totter

d)

Crowbar

186.

What is not an example of a Pulley

a)

Screwdriver

b)

Elevator lift

c)

Well

d)

Crane

187.

Which is not an example of a Wheel and Axle?

a)

Screwdriver

b)

Door knob

c)

Teeter Totter

d)

Mixer

188.

Which of the following vocab does not go with Inclined plane

a)

Work

b)

Force

c)

Input Force

d)

Compound Machine

189.

Which of the following vocab does not go with wedge

a)

Input Force

b)

Output Force

c)

Fulcrum

d)

Work

190.

Which of the following vocab does not go with screw

a)

Simple machine

b)

Fixed

c)

Input Force

d)

Force

191.

Which vocab does not go with levers

a)

Compound

b)

Input Force

c)

Output Force

d)

Work

192.

Which vocab does not go with pulleys

a)

Fulcrum

b)

Force

c)

Fixed

d)

Movable

193.

What Vocab does not go with Wheel and axle?

a)

Force

b)

Input Force

c)

Axle

d)

Fixed

194.

What is it called when you multiply Force times Distance

a)

Work

b)

Joule

c)

Newton

d)

Power

195.

What is a machine that combines two or more machines

a)

Ideal

b)

Simple

c)

Movable

d)

Compound

196.

What is it called when you divide work by time

a)

Force

b)

Power

c)

Newton

d)

Joule

197.

What is the rate at which something is done

a)

Force

b)

Work

c)

Power

d)

Newton

198.

What is the term that means you compare the output to the input?

a)

Friction

b)

Ideal

c)

Efficiency

d)

Work

199.

What is the most basic device for making work easier

a)

Compound Machine

b)

Ideal Machine

c)

Simple Machine

d)

Inclined plane

200.

What is a device that is thick on one end and tapers on the other?

a)

Screw

b)

Wedge

c)

Lever

d)

Pulley

201.

What simple machine is an inclined plane wrapped around a cylinder?

a)

Wedge

b)

Pulley

c)

Screw

d)

Lever

202.

What simple machine is a rigid bar that is free to pivot or rotate on a fixed point?

a)

Inclined plane

b)

Wedge

c)

Lever

d)

Fulcrum

203.

What is the simple machine that is made of a grooved wheel with a rope or cable wrapped around it?

a)

Pulley

b)

Lever

c)

Wedge

d)

Screw

204.

What is the simple machine that is made of two connected objects that rotate about a common axis.

a)

Pulley

b)

Screw

c)

Wedge

d)

Wheel and axle

205.

What type of net force causes a change in an object's motion?

a)

Zero

b)

Nonzero

c)

Compound

d)

Efficient

206.

what is a push or pull called?

a)

Force

b)

Newton

c)

Work

d)

Power

207.

What is the simple machine that is a flat sloped surface

a)

Inclined Plane

b)

Screw

c)

Wheel and Axle

d)

Wedge

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